6. Spectroscopy

During the April 1994 DFOSC observing run,
spectra of 21 E and S0 galaxies in HydraI were obtained.
The instrumental setup is described in
Table (p. ).
The data were subsequently reduced by Inger Jørgensen.
This chapter describes these reductions.
It also describes how the DFOSC data were supplemented with
data from the literature
to yield the table of available HydraI spectroscopy,
presented in section .